<template>
    <div>
        <!-- 面包屑导航区 -->
       <el-breadcrumb separator-class="el-icon-arrow-right">
            <el-breadcrumb-item :to="{ path: '/home' }">首页</el-breadcrumb-item>
            <el-breadcrumb-item>数据统计</el-breadcrumb-item>
            <el-breadcrumb-item>数据报表</el-breadcrumb-item>
        </el-breadcrumb>
        <!-- 卡片视图 -->
        <el-card>
            <!-- 为ECharts准备一个具备大小（宽高）的Dom -->
            <div id="main" style="width: 750px;height:400px;"></div>
        </el-card>
    </div>
</template>

<script>
import echarts from 'echarts'
import _ from 'lodash'
export default {
    data() {
        return {
            // 待合并的数据项
            options: {
            title: {
            text: '用户来源'
            },
            tooltip: {
            trigger: 'axis',
            axisPointer: {
                type: 'cross',
                label: {
                backgroundColor: '#E9EEF3'
                }
            }
            },
            grid: {
            left: '3%',
            right: '4%',
            bottom: '3%',
            containLabel: true
            },
            xAxis: [
            {
                boundaryGap: false
            }
            ],
            yAxis: [
            {
                type: 'value'
            }
            ]
        }
        }
    },
    created() {
        
    },
    // 此时页面上的元素已经渲染完毕了
    async mounted() {
        // 基于准备好的dom，初始化echarts实例
        var myChart = echarts.init(document.getElementById('main'));

        // 
        const { data: res } = await this.$http.get('/reports/type/1')
        if (res.meta.status !== 200) {
            return this.$message.error('获取数据失败')
        }


        // 指定图表的配置项和数据
        const result = _.merge(res.data, this.options)
        
        // 使用刚指定的配置项和数据显示图表。
        myChart.setOption(result);
    },
    methods: {
        
    }
}
</script>

<style lang="less" scoped>

</style>
